@sanderux honestly, the higher end digital hitecs are all good. It really gets broken down to levels. I'd say mks titanium servos are the next big step but can be 2-3x price. They are incredible fast, strong and small. Also, they run on HV (7-8v). Also, had extremely good success with blue bird servos (blue-bird-model.com). That said the testing I've done with those is much less than with the mks.